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Montana Field Guide

Montana Field Guides

Bog Yellowcress - Rorippa palustris
Other Names:  Rorippa islandica


Global Rank: G5
State Rank: SNR

Agency Status
USFWS:
USFS:
BLM:
MNPS Threat Rank:
C-value: 4

External Links






 
General Description
Taprooted annual to short-lived perennial. Stems usually erect, 10–100 cm. Leaves basal and cauline; the lower leaves 3–15 cm long, petiolate, auriculate-clasping, oblanceolate, pinnately lobed and dentate; upper leaves similar, smaller, less divided and toothed. Vestiture of sparse, simple hairs below or plants glabrous. Petals yellow, 1.5–3 mm long. Fruit an ovoid silicle, 2–5 × 2–3 mm, glabrous; style 0.3–1 mm long; pedicels spreading, 3–10 mm long, longer than the silicle (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Montana has varieties palustris, hispida (Desv.) Butters & Abbe, and fernaldiana Butters & Abbe

Species Range
Present
 


Range Comments
Throughout most of N. America (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Summary of Observations Submitted for Montana
Number of Observations: 6

(Click on the following maps and charts to see full sized version) Map Help and Descriptions
Relative Density

Recency

 

(Observations spanning multiple months or years are excluded from time charts)



Habitat
Wet, often disturbed soil of fields, roadsides and along streams, wetlands; plains, valleys, montane (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

References
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Citation for data on this website:
Bog Yellowcress — Rorippa palustris.  Montana Field Guide.  .  Retrieved on , from